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Cleveland C55244 straight flute hand tap, TiN coated HSS, 3/4"-10 UNC bottoming

Cleveland

Cleveland C55244 Straight Flute Hand Tap 3/4"-10 UNC Bottoming HSS TiN

SKU CH-Z6V9-68379

Straight-flute hand tap cuts 3/4"-10 UNC threads to a 2-inch depth with TiN-coated high-speed steel for wear resistance

  • Product typeTaps
  • 3/4"-10 UNC thread cuts standard coarse threads
  • Bottoming chamfer threads to the bottom of blind holes
  • High-speed steel body resists wear during repeated use
  • TiN coating reduces friction and extends tool life
  • 25 in overall length with 2 in thread reach

Thread cutting tool for UNC holes

The Cleveland C55244 is a straight flute hand tap designed to cut internal 3/4"-10 UNC threads in through-holes and blind holes. It suits maintenance technicians, machinists and workshop staff who need to create or repair coarse threads in steel, cast iron and non-ferrous metals using hand or light machine power.

Bottoming chamfer for full thread depth

The bottoming chamfer cuts threads close to the bottom of a blind hole, with a 2 inch thread length and an overall length of 4.25 inches. High speed steel with a TiN coating provides wear resistance, while the H3 thread limit targets a class 2B fit when used with a 16.50 mm drill for 75 percent thread engagement.

Hand or light machine installation

Start the tap square to the workpiece and use cutting fluid to reduce torque and improve finish. The straight flute design clears chips best in through-holes; in blind holes withdraw frequently to prevent packing. Misalignment or insufficient lubrication are the most common causes of tap breakage or oversize threads.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $51.99
Pricier than about 68% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

Questions about this item

How deep will the 3/4"-10 UNC threads cut with the 2 in thread length?

The tap cuts threads up to 2 in deep in a single pass, suitable for through-holes or blind holes where the drill depth allows full engagement.

What does the H3 thread limit mean for the finished 3/4"-10 UNC fit?

H3 places the pitch diameter on the high side of the 2B tolerance band, giving a tighter class-of-fit for precision assemblies while still meeting standard 2B requirements.

What size hole must I drill before tapping with this 3/4"-10 UNC tap?

Drill a 16.50 mm hole to achieve the recommended 75 percent thread engagement for a 3/4"-10 UNC thread.

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